Other mistake: In the private conversation scene with Bill Murray and "Sarge" in the latrine at basic (Sarge's office) the toilet bowl in the back left corner is installed backwards. (00:43:03 - 00:45:10)
Other mistake: During the graduation scene, if you watch as the platoons are marching by, you can see that several members are not in cadence as they should be. This also includes the men walking between the platoons that are supposed to be setting the cadence and they are out of step with the platoon in front and behind them.
Suggested correction: Those drug tests didn't exist in 81.
Did you watch the film? The recruits are told they are about to take a broad spectrum drug test - not they are going to be searched for drugs, they are going to tested for the presence of illegal drugs in their systems. As has been pointed out such drug tests were mandatory at the time the film is set but that is not important - in the context of the film Elmo's action make no sense as he is going to be tested for drugs. Hiding his stash makes no sense at all as it will not solve his immediate problem. The posting is correct and the correction is nonsensical.
Drug testing of recruits commenced in the United States on a trial basis in 1975 and became compulsory in 1977. In 1981 every single volunteer would have to take a broad spectrum drug test before being allowed to start boot camp.
What specific drug tests didn't exist? Nixon directed a military drug urinalysis program in 1971 and the DoD started random drug testing in 1974 (not that testing deterred drug use).
Bishop73
I enlisted in 1982. I got a single drug test at the meps and didn't get tested again during an entire 3 year enlistment. In fact, I didn't receive a drug test until 2 years into my second enlistment. The military just wasn't as strict on drug testing.
ssgemt