What were these occupations?

[1] From the 1910 census: a 19-year-old youth from Seim, Hordaland, living in Harstad, Troms county in a household with several other young men. All these fellows have the occupation "underofficerelev". Are they in the military? Or?? [2] From a 1908 church book: A bride in Bergen, in her late 20s, occupation"hjemmevær". Meaning?