I pulled out the CD of OPERATION CROSSBOW. While I do hear some similarities in style (especially the snare drums), the music in the clip does not seem to be from OPERATION CROSSBOW.
I have a feeling it's something of an earlier vintage. What kills me is that I know this music from somewhere, I started humming along as soon as I heard it, but I just can't place it.
As a side note, hey, thanks for mentioning CROSSBOW; I hadn't listened to that CD in a long time. I really liked it! I think it ranks right up there with the other Goodwin war scores, although WHERE EAGLES DARE will always the top place in my list.
I will say that the first clip seems to use an excerpt from the opening to GUNGA DIN. As to where that second clip comes from (the one that sounds like a part of Holst's THE PLANETS), although I know I've heard it elsewhere, I can not place it.