Ex army here , during basic I don't remember jacking , I might have once ? but like what was said earlier , you really don't have any time of place to do it , they are on your ass 24/7 , the only time is maybe with lights out , but even then you have a fire guard on duty.
Now once I got to AIT and my duty station ,
My first night in Germany I was in a temp room with about 3 guys , they had all been there for a couple months , when the light went out i heard and could see , in the dark the guys stroking , pretty bro bonding .
I've seen many guys with semi's and I had one roommate came back to the barracks , out in a porn and started jacking while I was "sleep" he knew I wasn't
but we were buddies .
Also while on duty my replacement was late I went to his room unlocked his door he was passed out, pants around his feet , cock in hand , and porn still on the tube
if you wanna hear the rest hit me up !
but hell yes it happens and ANYONE who says it never happens or was unaware is blind or lying , or just would NEVER say it . but you have young guys, in their 20's ,horny,
they are jacking off ! nothing wrong with it