Trimming the tables of organization of the armored divisions in 1943, Army Ground Forces cut the number of tank battalions in the armored division from 6 to 3 and reduced the number of tanks from 390 to 263. In process, the number of non-divisional tank battalions increased to 65, permitting more combined training with the infantry divisions. Later, it became standard practice to attach a non-divisional tank battalion to each infantry division where possible. Almost 4,000 personnel were cut from the division establishment although the number of Sherman tanks was only reduced by a quarter. While the old armored division organization was cumbersome and inefficient, the new was flexible but sometimes too lean and light, requiring supplementing. All armored divisions were converted to the new tables except the 2nd and 3rd, which remained under the old, with some modifications.