Juang Kartika Day TNI-AD is a special date specifically commemorated to commemorate the Battle of Ambarawa. Previously named Infantry Day. The struggle of the People's Security Army (TKR) led by General Sudirman in mid-December 1945 made the allied army pinned and finally retreated from Ambarawa to Semarang. Although confronted with all the power of modern weaponry and the ability of allied tactics and strategies, the Indonesian fighters never flinched in the slightest. They launched a vigorous attack while carrying out a tight siege in all corners of the city of Ambarawa. With this double siege movement the allies are truly confined. The battle ended with a brilliant victory from TKR. The strong allied fortress of the TKR forces was captured. The victory of the battle of Ambarawa on December 15, 1945 and the success of the Great Commander General Soedirman were later enshrined in the form of the monument of Palagan Ambarawa. The TNI AD commemorates that date every year as an Infantry Day. Based on RI Decree No. 163/1999, the Infantry Day was then replaced with the name Hari Juang Kartika. (pnri.go.id)