When I was a 2LT of Field Artillery at Fort Sill back in '67 we thought nothing of having a sandwich and beer at the O club for lunch before shooting our M101A1 105mm howitzers or 50 cal machine gunsin the field in the afternoon. Nobody had more than one and there was never a problem. It was often a battalion officers lunch call so everyone was there. It just wasn't a big deal then but times have changed and we've become much more puritanical about alcohol in the US since then.