sob1_2017

Position: Combat officer

Joined: 2017-05-07

Stats
GM X
GM VIII
GM VI
Company statistics
Team statistics
Skirmishes statistics
Stronghold statistics
Share
Other

Overall Stats

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	5583		6		24		154
Ø Tier	6,07		7,83		8,13		8,01
Victories	2494	44,67%	2	33,33%	8	33,33%	59	38,31%
Defeats	3042	54,49%	4	66,67%	16	66,67%	94	61,04%
Draws	47	0,84%	0	0,00%	0	0,00%	1	0,65%
Battles survived	1037	18,57%	1	16,67%	6	25,00%	29	18,83%
Tanks destroyed	2115	0,38	6	1,00	11	0,46	74	0,48
Destruction ratio	0,47		1,20		0,61		0,59
Tanks spotted	4041	0,72	9	1,50	17	0,71	125	0,81
Damage dealt	468,70		1.246,33		1.096,00		1.063,03
Capture points	2893	0,52	0	0,00	0	0,00	30	0,19
Defense points	1225	0,22	0	0,00	0	0,00	0	0,00
Experience	356,78		490,83		596,13		567,94
WN7	521,45		980,40		543,32		608,58
WN8	522,33		1466,37		888,94		922,17

Total
Battles	5583
Ø Tier	6,07
Victories	2494	44,67%
Defeats	3042	54,49%
Draws	47	0,84%
Battles survived	1037	18,57%
Tanks destroyed	2115	0,38
Destruction ratio	0,47
Tanks spotted	4041	0,72
Damage dealt	468,70
Capture points	2893	0,52
Defense points	1225	0,22
Experience	356,78
WN7	521,45
WN8	522,33

Past 24 hours
Battles	6
Ø Tier	7,83
Victories	2	33,33%
Defeats	4	66,67%
Draws	0	0,00%
Battles survived	1	16,67%
Tanks destroyed	6	1,00
Destruction ratio	1,20
Tanks spotted	9	1,50
Damage dealt	1.246,33
Capture points	0	0,00
Defense points	0	0,00
Experience	490,83
WN7	980,40
WN8	1466,37

Past 7 days
Battles	24
Ø Tier	8,13
Victories	8	33,33%
Defeats	16	66,67%
Draws	0	0,00%
Battles survived	6	25,00%
Tanks destroyed	11	0,46
Destruction ratio	0,61
Tanks spotted	17	0,71
Damage dealt	1.096,00
Capture points	0	0,00
Defense points	0	0,00
Experience	596,13
WN7	543,32
WN8	888,94

Past 30 days
Battles	154
Ø Tier	8,01
Victories	59	38,31%
Defeats	94	61,04%
Draws	1	0,65%
Battles survived	29	18,83%
Tanks destroyed	74	0,48
Destruction ratio	0,59
Tanks spotted	125	0,81
Damage dealt	1.063,03
Capture points	30	0,19
Defense points	0	0,00
Experience	567,94
WN7	608,58
WN8	922,17

Created at:

Last battle:

Last update:

Globalmap Absolute X

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	0		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	0,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	0,00		0,00		0,00		0,00

Total
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Globalmap Champion VIII

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	0		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	0,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	0,00		0,00		0,00		0,00

Total
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Globalmap Middle VI

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	0		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	0,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	0,00		0,00		0,00		0,00

Total
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Company statistics

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	0		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	0,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	0,00		0,00		0,00		0,00

Total
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Team statistics

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	0		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	0,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	0,00		0,00		0,00		0,00

Total
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Skirmishes statistics

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	11		0		0		0
Victories	3	27,27%	0	0,00%	0	0,00%	0	0,00%
Defeats	8	72,73%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	3	27,27%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	8	0,73	0	0,00	0	0,00	0	0,00
Damage dealt	231,91		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	156,09		0,00		0,00		0,00

Total
Battles	11
Victories	3	27,27%
Defeats	8	72,73%
Draws	0	0,00%
Battles survived	3	27,27%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	8	0,73
Damage dealt	231,91
Capture points	0	0,00
Defense points	0	0,00
Experience	156,09

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Stronghold defense statistics

	Total		Past 24 hours		Past 7 days		Past 30 days
Battles	0		0		0		0
Victories	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Defeats	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Draws	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Battles survived	0	0,00%	0	0,00%	0	0,00%	0	0,00%
Tanks destroyed	0	0,00	0	0,00	0	0,00	0	0,00
Destruction ratio	0,00		0,00		0,00		0,00
Tanks spotted	0	0,00	0	0,00	0	0,00	0	0,00
Damage dealt	0,00		0,00		0,00		0,00
Capture points	0	0,00	0	0,00	0	0,00	0	0,00
Defense points	0	0,00	0	0,00	0	0,00	0	0,00
Experience	0,00		0,00		0,00		0,00

Total
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 24 hours
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 7 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

Past 30 days
Battles	0
Victories	0	0,00%
Defeats	0	0,00%
Draws	0	0,00%
Battles survived	0	0,00%
Tanks destroyed	0	0,00
Destruction ratio	0,00
Tanks spotted	0	0,00
Damage dealt	0,00
Capture points	0	0,00
Defense points	0	0,00
Experience	0,00

World of Tanks Profile

Anzeigen

Tanks (79)

Tank Name	Tier	Ø Damage	Ø XP	Battles	Victories	WN8
Tiger 131	6	641,68	486	903	48,06%	896,84
KV-1	5	332,15	283	524	48,66%	521,76
Tiger I	7	613,21	431	496	43,35%	574,39
Tiger (P)	7	443,75	322	424	40,57%	307,04
Tiger II	8	574,80	400	351	38,46%	356,04
Pz.Kpfw. IV Ausf. H	5	126,26	178	325	41,54%	69,18
VK 30.01 (P)	6	203,29	227	242	44,21%	109,75
E 75	9	1162,49	574	211	47,39%	869,97
VK 100.01 (P)	8	630,88	456	204	43,63%	475,99
Jagdpanzer 38(t) Hetzer	4	110,25	179	168	48,21%	92,69
Löwe	8	1189,08	676	125	50,40%	1257,26
KV-2	6	333,47	274	103	49,51%	366,61
AMX ELC bis	5	106,96	198	98	50,00%	177,78
Pz.Kpfw. IV Ausf. D	4	41,53	207	77	53,25%	124,70
AMX 40	4	129,59	190	74	47,30%	378,96
T-28	4	83,10	133	69	47,83%	77,52
VK 30.02 (M)	6	527,50	440	62	46,77%	794,51
Emil I	8	798,09	600	54	38,89%	578,78
VK 36.01 (H)	6	146,38	234	52	55,77%	158,47
Churchill III	5	146,46	289	52	51,92%	131,26
T-150	6	348,33	376	49	48,98%	386,00
Pz.Kpfw. IV Ausf. A	3	34,90	135	48	41,67%	6,17
T1 Heavy	5	398,10	324	41	34,15%	549,43
T-34-85M	6	332,98	334	41	48,78%	353,11
E 100	10	1280,42	502	38	36,84%	668,46
Kranvagn	10	1241,69	625	36	36,11%	646,03
O-I	6	598,15	393	34	35,29%	719,69
SDP 44 Burza	6	483,25	289	32	21,88%	508,38
Tiger-Maus	9	1106,03	546	31	25,81%	611,53
Marder II	3	47,40	159	30	33,33%	0,00
Leichttraktor	1	55,10	145	30	50,00%	89,06
Grille	5	248,90	244	30	33,33%	234,73
WZ-111 Alpine Tiger	8	863,14	664	28	39,29%	722,36
T-46	3	71,54	143	28	50,00%	124,38
Mäuschen	9	897,48	537	27	33,33%	445,95
LT vz. 35	2	54,69	109	26	34,62%	0,00
Pz.Kpfw. III Ausf. E	3	33,79	104	24	41,67%	23,79
Super Hellcat	7	344,74	290	23	26,09%	189,54
VK 30.01 (H)	5	463,65	361	23	39,13%	855,58
StuG III Ausf. G	5	198,95	142	22	36,36%	156,31
T29	7	621,76	433	21	19,05%	468,47
Type 89 I-Go/Chi-Ro	2	17,50	85	20	35,00%	0,00
ST vz. 39	4	254,30	350	20	65,00%	913,39
AMX 38	3	57,47	169	19	36,84%	0,52
T6 Medium	4	295,58	323	19	42,11%	502,23
Emil II	9	857,79	632	19	42,11%	465,51
Pz.Kpfw. II	2	23,22	92	18	44,44%	35,55
Pz.Kpfw. II Luchs	4	47,94	174	17	35,29%	0,00
Panther	7	661,88	570	17	52,94%	950,13
G.Pz. Mk. VI (e)	2	19,60	85	15	60,00%	202,62
M3 Stuart	3	182,43	204	14	21,43%	514,59
StuG III Ausf. B	4	321,08	299	13	46,15%	649,06
M6	6	734,40	572	10	40,00%	886,22
T-26	2	60,67	105	9	44,44%	70,25
Pz.Kpfw. I	2	31,00	132	8	62,50%	228,94
Škoda T 24	5	423,38	362	8	50,00%	976,07
Panzerjäger I	2	30,63	143	8	50,00%	76,03
Kolohousenka	1	40,43	84	7	57,14%	138,46
LT vz. 38	3	262,86	250	7	42,86%	993,94
Renault R35	2	79,86	167	7	57,14%	121,68
Type 91 Heavy	3	66,00	121	6	66,67%	261,00
Pz.Kpfw. IV Ausf. F2	5	127,17	213	6	33,33%	1,54
Strv m/40L	3	267,20	287	5	80,00%	978,07
IS-7	10	898,00	765	5	60,00%	662,70
Pz.Kpfw. I Ausf. C	3	21,80	140	5	60,00%	187,91
Tetrarch	2	28,00	149	5	40,00%	0,72
AT-1	2	23,67	160	3	100,00%	261,00
Sturmpanzer I Bison	3	191,33	242	3	66,67%	726,68
T1 Cunningham	1	119,50	186	2	50,00%	620,13
MS-1	1	170,50	261	2	50,00%	886,61
Strv m/38	2	329,00	386	1	100,00%	1475,05
M10 RBFM	5	0,00	235	1	100,00%	261,00
Strv fm/21	1	78,00	136	1	100,00%	423,70
AMX ELC 901	6	0,00	246	1	0,00%	0,00
Renault Otsu	1	7,00	54	1	0,00%	0,00
T-50-2	6	88,00	69	1	0,00%	0,00
VK 28.01 mit 10,5 cm L/28	6	470,00	260	1	0,00%	1011,58
Renault FT	1	27,00	106	1	100,00%	261,00
Lago	4	106,00	167	1	0,00%	54,23

Graphs

WN8

Anzeigen

Clan history

[OCP] Ocelový Prapor

Position: Combat officer

Joined: 2017-05-07

[OCP] Ocelový Prapor

Position: Combat officer

Joined: 2017-05-07

Left: 2024-12-24

sob1_2017

Overall Stats

Globalmap Absolute X

Globalmap Champion VIII

Globalmap Middle VI

Company statistics

Team statistics

Skirmishes statistics

Stronghold defense statistics

Share

Tanks (79)

Graphs

WN8

Clan history