Context : Born in Zürich to Bertha Gizella, née Oechslin, and Huldreich, Sigmund Widmer was citizen of the city of Winterthur, raised in Zürich, and as a child he also spent some time in the family of Ruth Guggenheim Heussler. 
Subject : Sigmund Widmer 
Relation : military branch
What military branch was Sigmund Widmer associated with?