 While it acknowledges that there are high scoring aces, who seem invulnerable (notably the character of "Mac"), most of the characters find the war interminably unpleasant, alternatively horrid and dull, enlivened only by regular nihilistic drinking binges.Equally, it acknowledges the serious flaws in allied aircraft by 1918.While many more modern sources (including Wikipedia) list the Sopwith Camel as an excellent, almost unsurpassed aircraft, Yeates, via Cundall, complains that it was too slow, and could not climb high enough - flaws so serious that Cundall's squadron is regularly assigned to ground attack, being covered by SE5as.