An action scene in a Jake Gyllenhaal fantasy movie elicits a mixed reaction from a historian who is an expert in ancient warfare and battle tactics.
He looks at weapons and physical training in "Forrest Gump" (1994), starring Tom Hanks; "Jarhead" (2005), with Jake Gyllenhaal; "Hacksaw Ridge" (2016), with Andrew Garfield; and "Band of Brothers ...