Complex sentence: The 15th Foot was awarded the battle honour Martinique 1794 (5 February--25 March) and also saw service at Guadeloupe (12 April) the same year.
Split into simpler sentences: The 15th Foot was awarded the battle honour Martinique 1794 (5 February--25 March). The regiment also saw service at Guadeloupe (12 April) the same year.