In the reflection of a character from Patrick O'Brian's "Blue at the Mizzen," there's a contemplation about the inherent differences between soldiers and sailors. The character observes that despite their distinct natures, these differences might be obscured when alcohol is consumed in large amounts. This suggests that while their personalities may differ, external factors like drinking can blur the lines between them.

This insight highlights how substances can influence behavior and perception, potentially altering one’s identity or social interactions. The character's musing points to a deeper understanding of human nature and the factors that can unify seemingly disparate groups, particularly in challenging environments like those faced by military personnel.