Possible Clues:

• Troops join army finally holding unit
• Troops oddly surly, including veteran
• Army exchanged for money one in hospital yard
• Fighters sorry, oddly, about veteran
• Troops moved, namely by railway
• Military personnel
• Southern Railway carrying veteran warriors
• Fighting force, with veteran in second line
• Military qualities
• Having disposed of one with a mixture of rye, they are all up in arms