For a 73 year old movie this holds up rather well. Seems like many of the scenes showed up in later movies. The battle scenes were good, but not historical. WWI was basically trench warfare and not battles with snipers in trees. (That's more like WWII in the Pacific.) There were some good shots on No Man's Land, but again, everyone seemed to be fighting out of shell holes.Some of the scenes seem trite, but again, consider the times. Not a classic, but still a very ambitious undertaking considering the state of the film art in 1927. Some of the special effects (like the artillery barrages) were awesome. Definitely worth a look.
Review of The Big Parade
