Thank you very much for your information, and for the comments, i really appreciate it 
I think it's still an interesting jacket (definatly WWII period), and it's also pretty interesting to see the 'dark side' of 506th PIR (these things probably happend more often then everyone thinks?).
Well here is an other jacket, in fact it's a grouping! This Shirt, cap and Jacket belonged to T/4 Linnie W. Vaughn, HQ Coy, 101st Airborne Division. The jacket is a size 38S and dated May 31, 1944. I am also researching T/4 Vaughn and i hope he got a better reputation hehe. 
I am getting a new Ike jacket this Thursday, it belonged to a member of 907 Glider Field Artillery Battalion. I know that he landed on 23 Sept 1944 in Son, Holland. On the jacket isn't a Dutch lanyard but he deserved one, so i think i am going to remove the Dutch lanyard from the M42 and put it on the jacket, that belonged to Pfc Jesse Moore (also researching him, hehe).
Any information about these names would be much appreciated, thanks in advance! 