After the liberation of Afghanistan from British rule, Afghanistan entered a new era.

The war against the British began on May 3, 1919, in the provinces of Nangarhar, Paktia, and Kandahar.

According to some analysts, even though at that time the soldiers of the Shah did not have much military equipment, their ambition led to a political agreement between the then-royal system and Britain.

“Afghanistan had 12,000 troops, and in front of the British, together with the Indian and Bengali forces, they had nearly 150,000 soldiers, and along with these British, they had cannons and airplanes to bombard us,” said Aminullah Ehsan, a political analyst.

“Kandahar front, Paktia front, and Nangarhar front were among the fronts that fought against the British, Saleh Mohammad Khan was acwar commander on the Nangarhar front and Nader Khan in Paktia,” said Wahid Taqat, a military issues analyst.

In those days, the First World War ended, and Shah Amanullah started to build the freedom of Afghanistan by motivating the citizens of the country.

"I think that the two strategies that Amanullah Khan took were the strategy of pressure and negotiation, and the policy of pressure made the British accept the ceasefire, and the second was the strategy of negotiation, on the basis of which many negotiations took place,” said Jawed Mohman, a lecturer.

On the 6th of May, Britain declared war on Afghanistan, and British India (The British Raj was the rule of the British Crown on the Indian subcontinent) military forces were mobilized, and they bombarded Jalalabad and Kabul.
The war, which is also known as the War of Independence, was the last military battle between Afghanistan and Britain at that time, and finally, on June 3, 1919, a cease-fire was requested, and a delegation led by Ali Ahmad Khan from Afghanistan and Hamilton Grant from Britain at that time negotiated in Rawalpindi and on August 8, 1919, the Treaty of Rawalpindi was signed.
"All the British politicians at that time had come to the conclusion that they should protect the remaining Britain and rule over it and think about rebuilding... Britain was too weak at that time," said Fayaz Safi, analyst.
After that, on November 22, 1921, the Treaty of Rawalpindi, or the Third Anglo-Afghan War, was signed in Kabul, and the treaty guaranteed the internal and external independence of Afghanistan, and Britain recognized the independence of Afghanistan.