Factual error: The strong current of the river the main character falls into carries him to a considerable waterfall. There is not, nor has there ever been, a river of that kind in Flanders' Fields, let alone a waterfall. Anyone who has any insight into the geography of the region will tell you it is flat as can be. The largest body of water, the Yzer, gently meanders and flows into the Channel, even during really rainy times.
Factual error: This is set in 1966. The soldiers are all using the Aussie version of the M16 which was introduced in Vietnam by their military in 1967 with limited use and only became more widely used somewhat later.
Factual error: At presentation of the Medal of Honor, the US Air Force Secretary reads the citation that states William H. Pitsenbarger was an Airman First Class (E-3 with 2 stripes) but in the battle scenes William H. Pitsenbarger is wearing the insignia of a 'Buck' Sergeant (E-4 with 3 stripes). (00:14:29 - 01:43:55)