unmilitarily
/(ˌ)ʌnˈmɪlɪt(ə)rɪli/ /(ˌ)ʌnmɪlɪˈtɛrɪli/adverb
Not militarily; in a manner not according to military practice or conforming to military standards.
Origin
Late 18th century; earliest use found in Tom Paine (1737–1809), author and revolutionary. From unmilitary + -ly.