The Home Army provided the Warsaw Ghetto with firearms, ammunition, and explosives, but only after it was convinced of the eagerness of the Jewish Combat Organization ("Żydowska Organizacja Bojowa", ŻOB) to fight, and after Władysław Sikorski's intervention on the Organization's behalf. Zimmerman describes the supplies as "limited but real". Jewish fighters of the Jewish Military Union ("Żydowski Związek Wojskowy", ŻZW) received from the Home Army, among other things, 2 heavy machine guns, 4 light machine guns, 21 submachine guns, 30 rifles, 50 pistols, and over 400 grenades. Some supplies were also provided to the ŻOB, but lass than to ŻZW with whom the Home Army had closer ties and ideological similarities. Antoni Chruściel, commander of the Home Army in Warsaw, ordered the entire armory of the Wola district transferred to the ghetto. In January 1943 the Home Army delivered a larger shipment of 50 pistols, 50 hand grenades, and several kilograms of explosives, along with a number of smaller shipments that carried a total of 70 pistols, 10 rifles, 2 hand machine guns, 1 light machine gun, ammunition, and over 150 kilograms of explosives. The number of supplies provided to the ghetto resistance has been sometimes described as insufficient, as the Home Army faced a number of dilemmas which forced it to provide no more than limited assistance to the Jewish resistance, such as supply shortages and the inability to arm its own troops, the view (shared by most of the Jewish resistance) that any wide-scale uprising in 1943 would be premature and futile, and the difficulty of coordinating with the internally divided Jewish resistance, coupled with the pro-Soviet attitude of the ŻOB. During the 1943 Warsaw Ghetto Uprising, Home Army units tried to blow up the Ghetto wall twice, carried out diversionary actions outside the Ghetto walls, and attacked German sentries sporadically near the Ghetto walls. According to Marian Fuks, the Ghetto uprising would not have been possible without supplies from the Polish Home Army.