Ma'anar ƙamus na kalmar "Laftanar Farko" yana nufin matsayi a cikin sojoji, musamman a cikin sojoji, sojojin sama, da na ruwa, sama da matsayi na Laftanar na biyu kuma ƙasa da matsayi na Kyaftin. A cikin Sojojin Amurka, Lieutenant na farko yakan ba da umarni ga rukunin sojoji, kuma yana iya zama ma'aikacin ma'aikata a wurare daban-daban. A cikin Rundunar Sojojin Sama da na Marine Corps na Amurka, Laftanar na Farko na iya zama matukin jirgi ko wani jami'in gudanarwa, ko kuma a matsayin ma'aikacin ma'aikata a wurare daban-daban.