Found this video clip on the forum I found I've been visiting this week, http://www.ww2-eto.com/forum/index.php
http://smg.photobucket.com/albums/v98/faab...ent=1947_09.flv
The post itself is all in Dutch, so I just copied the video link. Hey Daan, can you tell us anything about this since it's on your forum? 
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company
Hi Marion,
That topic was started by a Belgium forum member, he owns a Harley Davidson and has made a website about those bikes, it's an English website and very interesting! Take a look;
http://www.theliberator.be/liberator.htm
Regards Daan
Daan:
Fantastic site. I've still looking through it right now. Have already spent over a half hour just browsing. Some super photographs.
As I stated to you in a PM today, my dad was riding a motorcycle on May 24, 1944, when he was injured by a mortar shell at Anzio.
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company
I wrote to Johan yesterday regarding my dad and he wrote back today. Thank you so much Johan! 
Hi Marion,
Your father would most likely have been riding a Harley-Davidson Model WLA Motorcycle as pictured on my site.
The US Army used mostly Harley and some Indians during WW2, but by 1944 about 99% of the bikes in use in Europe would have been Harleys...
Talk soon,
Johan
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company
Marion , Mr John Lind , curator of the Detroit Arsenal of Democracy owns a Harley that was used in Normandy and Holland . It will be on display at the Salute to Veterans Weekend .
Best
Reg
Oh goodie, goodie, goodie. Can't wait to see it.
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company