Pizza 4 Patriots and shipping company DHL organised the delivery of 30,000 pizzas to service personnel in Kandahar, Bagram and Camp Bastion in Afghanistan in celebration of Independence Day.
Forces Network has taken a look at the military world's biggest records.
World's Biggest Detonation: Tsar Bomba - AN602 hydrogen bomb: 58 Megatons
The AN602 hydrogen bomb was the most powerful nuclear weapon ever detonated. It contained the equivalent of 58 million tonnes of TNT, or all the explosives used in WWII multiplied by 10.
Its 30th October test in 1961 remains the most powerful artificial explosion in human history.
World's Biggest Conflict: The Second World War was the deadliest military conflict in history, killing over 3% of the world's population.
The highest estimated death toll tops 85 million losses.
World's Biggest Weapon: Schwerer Gustav - German 80 cm K (E) railway gun
The gun was developed in the late 1930s by Krupp as siege artillery. Its purpose was to destroy the main forts of the French Maginot Line, the strongest fortifications then in existence.
The fully assembled gun weighed nearly 1,350 tonnes, and could fire shells weighing seven tonnes to a range of 47 kilometres (29 mi).
World's Highest Calibre Weapon: Mallet's Mortar- a British shell-firing mortar built for the Crimean War, but never used in combat.
The Crimean War of 1854 called for a mortar that could be easily transported but was of sufficient size, and therefore calibre, to lob a heavy projectile over the walls of the fortress of Sebastopol.
World's Biggest Warplane: Tupolev Tu-160 - a supersonic, variable-sweep wing heavy strategic bomber
Although several military transport aircraft are larger in overall dimensions, the Tu-160 is the world's largest combat aircraft, largest supersonic aircraft and largest variable-sweep aircraft.
World's Largest Helicopter: The Mil Mi-26 - a Soviet/Russian heavy transport helicopter
In service with civilian and military operators, it is the largest and most powerful helicopter to have ever gone into production.
World's Largest Military Hovercraft: Zubr-class LCAC - a class of air-cushioned landing craft of Soviet design.
This class of military hovercraft is, as of 2012, the world’s largest hovercraft. It is designed to sealift landing assault units (such as marines or tanks) to shore, as well as to transport and plant mines.
World's Fastest Warplane: Lockheed SR-71 Blackbird - Since 1976, the Lockheed SR-71 Blackbird has held the world record for the fastest ‘air-breathing manned aircraft’.
A recorded speed of 1,905.81 knots (2,193.2 mph; 3,529.6 km/h) works out to a staggering 36.55 miles/58.83 km per minute.
World's Fastest Submarine: Russian Alfa Class - 40 knots (74 km/h or 46 mph) and capable of diving to 760 m (2,500 ft)
They were the fastest class of military submarines built, with only the prototype K-222 (NATO Papa class) exceeding them in submerged speed.
World's Largest Pizza Delivery: A pizza mission to US military service members in Afghanistan.