National Republican Army in the context of "Royal Italian Army during World War II"

The Italian campaign of World War II, also called the Liberation of Italy following the German occupation in September 1943, consisted of Allied and Axis operations in and around Italy, from 1943 to 1945. The joint Allied Forces Headquarters (AFHQ) was operationally responsible for all Allied land forces in the Mediterranean theatre and it planned and led the invasion of Sicily in July 1943, followed in September by the invasion of the Italian mainland and the campaign in Italy until the surrender of the Axis forces in Italy in May 1945.

The invasion of Sicily in July 1943 led to the collapse of the Fascist Italian regime and the fall of Mussolini, who was deposed and arrested by order of King Victor Emmanuel III on 25 July. The new government signed an armistice with the Allies on 8 September 1943. However, German forces soon invaded northern and central Italy, committing several atrocities against Italian civilians and army units who opposed the German occupation and started the Italian resistance movement. Mussolini, who was rescued by German paratroopers, established a collaborationist puppet state, the Italian Social Republic (RSI), to administer the German-occupied territory. On 13 October 1943, the Allies recognized Italy as a co-belligerent in the war against Germany. Thereafter, the Italian Co-Belligerent Army and the Italian partisans fought alongside the Allies against German troops and the collaborationist National Republican Army; an aspect of this period is the Italian civil war. In the summer of 1944, after the Axis defeats at Cassino and Anzio, central Italy, including Rome, was liberated. Northern Italy was liberated following the final spring offensive and the general insurrection of Italian partisans on 25 April 1945. Mussolini was captured by the Italian resistance and summarily executed by firing squad. The campaign ended when Army Group C surrendered unconditionally to the Allies on 2 May 1945, one week before the formal German Instrument of Surrender. Both sides committed war crimes during the conflict, and the independent states of San Marino and Vatican City surrounded by Italian territory also suffered damage.

The Italian Civil War (Italian: Guerra civile italiana, pronounced [ˈɡwɛrra tʃiˈviːle itaˈljaːna]) was a civil war in the Kingdom of Italy fought during the Italian campaign of World War II between Italian fascists and Italian partisans (mostly politically organized in the National Liberation Committee) and, to a lesser extent, the Italian Co-belligerent Army.

Many Italian fascists were soldiers or supporters of the Italian Social Republic, a collaborationist puppet state created under the direction of Nazi Germany during its occupation of Italy. The Italian Civil War lasted from around 8 September 1943 (the date of the Armistice of Cassibile, between Italy and the Allies) to 2 May 1945 (the date of the Surrender at Caserta). The Italian partisans and the Italian Co-belligerent Army of the Kingdom of Italy, sometimes materially supported by the Allies, simultaneously fought against the occupying Nazi German armed forces. Armed clashes between the fascist National Republican Army of the Italian Social Republic and the Italian Co-belligerent Army of the Kingdom of Italy were rare, while clashes between the Italian fascists and the Italian partisans were common. There were also some internal conflicts within the partisan movement. In this context, Germans, sometimes helped by Italian fascists, committed several atrocities against Italian civilians and troops.