Pro, usually. like anything else, you'll find the good the bad. I'll make one point about some of our favorite movies in the last 20 years or so. They could not have been done without them.
Glory, Gettysburg, Saving Private Ryan, Band of Brothers , The Pacific to name a few.
Aside from the ACW re enactments, I participated for a few events with a WW2 group here in the NW. 11th Panzer Grenadiers. We stored their halftrack at the farm for several years and since we had a complete metal shop we did the conversions required.
At a Memorial day event at Fort Stevens { mouth of the Columbia} we did a small battle reenactment. Maybe 100 troops between both sides, several US and German halftracks, an M20 AC . Complete with pyrotechnic explosions, smoke grenades for effect. The heavy weapons , M2 50 cals, the Mg42 were all GAS guns , Hollywood style. The small arms,M1, Thompsons, MP 40's Bren guns etc, all real, blank firing of course. Many an FFL license holders there.
We{ the Germans } attacked a group of US and British dug in , drove them back , captured some positions, and were counterattacked by the US armor and our halftrack knocked out by a Bazooka ala Saving Private Ryan.
Our last two troops in a captured trench were firing their mg42, { one guy was propping up dummies just where no one could see them in the trench} and at an appropriate time and signal they stuck there heads down, crawled around the corner in the slit trench, and when the American Bazooka fired it;s blank flash bang round, they hit a toggle switch setting off a charge blowing the dummies about 8 feet in the air.
So, of course we lost. We were supposed too. The Crowd loved it.
Back AT THE FORT the crowds gathered to inspect the vehicles, uniforms, guns of course and for about 2 hours we talked to the public about WW2 History.
My friend and I were cleaning out the track { lots of reloadable brass to salvage + dirt and soot} and a Man and his family were not happy with us. WHY are you Nazi's?!!! In this day and age, Whats the matter with you?!~!!!
We just laughed, friend we're not Nazi's, we're just portraying German soldiers. WHY WOULD YOU DO THAT??? Because , somebody has to be the bad guys to put on an event, that doesn't mean were ARE bad guys.{sm3}
FubAr