When Captain Randall is interrogating Claire, she expresses that he has a decent man within him still. Randall replies, 'It would be pretty to think so'. This is the same line that ends Hemingway's 'The Sun Also Rises'. In Hemingway's novel and in this scene, it is a cynical recognition that that dream has slipped away forever.
When Claire and Dougal are being escorted to meet the eponymous 'Garrison Commander', Claire remarks in her voice-over that the British soldiers surrounding them are called "Redcoats" at this time in history and not 'Tommies'. Interestingly enough, 'Tommy' is a shortened version of 'Tommy Atkins', and while the origin of the term is a subject of debate, it is known to have been used as early as 1743 - the very year Claire finds herself.
Side note: while the term is still used as of 2018 in the British Army in the abridged version "Tom" (especially in the Infantry Regiments, to specifically refer to a junior enlisted soldier), and would have been used in World War II, it is much more often associated with World War I.
Side note: while the term is still used as of 2018 in the British Army in the abridged version "Tom" (especially in the Infantry Regiments, to specifically refer to a junior enlisted soldier), and would have been used in World War II, it is much more often associated with World War I.