IDF numbers are hard to come by. I mostly did math, but I hedge the bets. On the other hand, it's hard to get a real sense of the numbers. I tried to be as faithful as I could to the accounting.
Nation's Full Name: Nation of Israel
Population: 1,370,000
Current Leader's Name: Prime Minister David Ben-Gurion (Coalition: Mapai• URF• Progressive• S&O• DLN)
Allegiance: Aligned with the French, for the moment, but has considerable support within the United States as well, though this has not come to full fruition yet.
Military strength: ~70,000 active and reserves + trained militia/kibbutznik home defense forces. Israel is heavily mobilized with a conscription system and lots of reservists. The country is dotted with stronghold communities that can, and have done so in 1947-48, fend off attacks by a hostile military.
IDF Numbers, based on TO&E for the Sinai Campaign.
15 brigades were mobilized during the 1956 war: 11x Infantry 1x Para Brigade 3x Armored Brigades
Infantry Brigade: 3,200 men
* HQ
* 4 Infantry Battalions (800 men)
** 4 infantry companies
** 1 Heavy weapons company:
*** Machine-gun platoon
*** 81mm Mortar platoon
** 1 Heavy Mortar.Battallion: 12x 120mm.mortars
** 1 Anti-tank Battallion: 12 6-pder AT guns
** 1 Artillery.Battallion: 12 155mm.Guns
Armored Brigade: 3.000 men , 45 tanks
* HQ
* 3 Armored.Battallions, each:
** 3 Armored Companies: 13 tanks each.
** 1 Mechanized Company: with M3 half-tracks
** 1 Reconnaisance Platoon: 7 jeeps
** 1 Self-Propelled Artillery Battery: 4 M-7 Priest SP Howitzers
* 1 Motorized Battalion
Source: Avalon Hill’s magazine “ The General”
Circa 1956, the Israeli Navy consisted of two destroyers, seven frigates, eight minesweepers, several landing craft, and fourteen torpedo boats. Per wikpedia research.
Circa 1950 (couldn't use 1956 due to changing aircraft types and expansion) the IAF has 13 squadrons, primarily P-51D mustang fighters, DC-3 transports and one of B-17 bombers, though the IAF is obviously very interested in jet aircraft. Per wikipedia research.