when were helmets first used in war

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when were helmets first used in war	1.83	0.1	1673	33	35
when	0.94	0.1	3380	95	4
were	1.11	0.5	6175	3	4
helmets	0.32	0.1	8337	85	7
first	1.63	0.3	9336	27	5
used	1.03	0.7	2743	29	4
in	1.4	0.8	2151	44	2
war	0.15	0.7	6957	75	3

Keyword	CPC	PCC	Volume	Score
when were helmets first used in war	0.15	0.6	7692	92
when were helmets introduced in ww1	0.39	0.9	6777	60
when were football helmets first used	0.41	0.4	7115	68
when were the helmets introduced	1.33	0.6	944	16
when were steel helmets introduced in ww1	0.05	0.2	6981	31
when were helmets used in football	1.73	0.6	8446	7
when were helmets invented	1.61	0.9	5174	9
first world war helmets	1.15	0.8	2629	78
first helmet used in sports	0.9	0.5	4477	77
when was the first helmet created	1.34	0.5	1702	45
when were helmets made	1.56	0.5	4651	59
helmets used in ww1	0.89	0.5	5343	58
history of military helmets	0.59	0.7	2167	74
what helmet was introduced in 1915	0.33	0.1	1667	14
military helmets throughout history	0.34	0.1	1070	25
history of the helmet	0.71	0.8	8816	23
us army helmets history	0.99	0.7	9749	19