Perhaps you should try some spelling variations:
infants regiment » infantry regiment, infants treatment, its regiment
form volunteer » foot volunteer, from volunteer, forming volunteer
his retirement » _ retirement
his regiment » first regiment, _ regiment, a regiment
new form » new forms

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: 7th new form volunteer ((infants regiment) OR (((his regiment) OR (his retirement)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "7th new form volunteer ((infants regiment) or (((his regiment) OR (his retirement))))".
• Adding a wildcard symbol may retrieve word variants: 7th new form volunteer ((infants regiment) or (((his regiment) OR (his retirement))))*.