In which world war did Operation Grenade and Gothic Line occurred?
World War II
Title: Operation Grenade
Passage: During World War II, Operation Grenade was the crossing of the Roer (Rur) river between Roermond and Düren by the U.S. Ninth Army, commanded by Lieutenant General William Hood Simpson, in February 1945.
Title: M34 grenade
Passage: The M34 White Phosphorus Smoke Grenade or "Willie Pete" was a chemical grenade manufactured by Rocky Mountain Arsenal from the late 1950s and used by U.S. forces during the Vietnam War and was also used during the First Gulf War.  The M34 WP Grenade replaced the World War II M15 WP grenade.  The M34 could be fired from a rifle grenade launcher using M2-series grenade launching adapters, which the groove around the tapered base allowing the adapter arms to grasp it.  The M15 could not be fired as a rifle grenade.  The M34 had a segmented body to allow for a better hand grip and to identify it as a casualty-producing grenade, even though it did not fragment.  The smooth-bodied M15 was sometimes assumed to be a burning type smoke grenade as the AN-M8 white smoke and resulted in injuries.
Title: Gothic Line
Passage: The Gothic Line (German: "Gotenstellung" ; Italian: "Linea Gotica" ) was a German defensive line of the Italian Campaign of World War II.  It formed Field Marshal Albert Kesselring's last major line of defence along the summits of the northern part of the Apennine Mountains during the fighting retreat of the German forces in Italy against the Allied Armies in Italy, commanded by General Sir Harold Alexander.
Gothic Line Operation Grenade