The Italian Army was issued a "New" Garand in 1943? Are you possibly confusing a Beretta BM-58
Beretta BM 59 - Wikipedia with something else?
Italy: Used by the army from 1945. Beretta license-built 100,000 M1s from 1950 until the adoption of the BM59 in 1959.[87] Also received 232,000 M1s from the U.S. government between 1950 and 1970.[80] The M1 Garand was known in the Italian Army as the Fucile «Garand» M1 cal. 7,62.[
When Italy surrendered in 1943 most of the peninsula was in German / Fascist hands. This included all of the industrial north. As much as a political move as a military one, the US began to supply the "New" (1943) Italian Army with equipment. This included (new to the Italian Army) Garands and .30-06 ammunition.
Rome fell the same day as D-Day began, June
5th 1944, just hours before the 101st and 82d parachuted into France. But parts of northern Italy, Bologna, Milan, Genoa, Venice, Trieste, did not fall until the Spring Offensive of April 9--May 2, 1945.
Like the Free French troops that participated in the Liberation of France, the Italian troops that took part in the Liberation of Italy used Sherman Tanks, GMC trucks, Winchester Carbines, and Garands.
Communist cells had organized sporadic opposition to the Fascists and had stockpiled arms and ammunition. After the north was recaptured / liberated there was a great fear of a Communist revolt in Italy (as well as in France and Greece). The Italian Army continued to receive US weaponry to update its equipment and replace all of its German made items.
Famously this led to the retirement and sale of their 6.5×52 Mannlicher-Carcano rifles.
On a "we treat former enemies better than our allies" note, the weapons we supplied to Great Britain through lend-lease had to be returned or destroyed after the war. So-- a sad sound*-- literal tons of classic firearms including S&W revolvers were dumped into the ocean. But France and Italy kept what they received.
The French sold some of their Garands to Israel. The Italians had Baretta convert theirs to use box magazines. The original Baretta conversion on a US produced Garand led to all-- or almost all, it is dangerous to ever say "all / every" or "no / none"-- Garands in their stocks being converted.
Baretta also produced Garands from new under license.
* The software edited out my first word choice. I guess that word, the sound of someone crying, was mistaken for an acronym. Proof that humans will never be competently replaced by AI.