my combat veteran husband observed that we should in fact use the chin straps on our "helmets"
In the ETO specific orders otherwise for infantry at risk of exposure to artillery attack. About 1/2 way down the page. Anecdotally confirmed by the toughest squad leader ever, Sgt Saunders of Combat. Helmet chin straps
1,564 posted on 11/10/2018 12:51:33 PM PST by xone
1,583 posted on 11/10/2018 1:26:07 PM PST by defconw
("The truth is like a lion. You don't have to defend it. Let it loose and it will defend itself.")