I recognized some words which are often used during drill
at 0:18
Doray Chal , Doray Chal - double up , "doray chal" is common during boot camp
Next few urdu sentences that one can make out
at 4:06 , there is man that walk up to the chap on the ground and says , places his hand on hip ad say
"Kya kar rahay thay idhar , wardi kis liya pehni hui ha tum nay , ....(uinteligibale).... baqi banday " - What were you doing here , for what are you wearing this uniform ......... next one can make out "baqi banday" , which means rest of the men , probably signaling to bring forward the rest.
References to "wardi" ( uniform ) during training are often made , example if some cadet or recruit is slouching , the drill instrctor will pull him up and ofen say "for what are you wearing this uniform"
I cannot say this for sure that this is a training video, maybe it is , a controlled simulated brutality that the troops are likely to face , some words and phrases look very familiar