The 3-7^th Infantry Regiment was raised on 1^st July 1946 in 's-Hertogenbosch and consisted of conscripts from the year 1945. It was only supposed to be used as a guard unit but although it only had a short training period and was lightly equipped. It ended up being put into action as a common infantry battalion. It left for Dutch East India on 15^th October 1946 onboard “Kota Baroe”. And arrived in Semarang on 22^nd November 1946.
On 27^th December 1946 the 3-7^th Infantry Regiment took over positions along the eastern and western Bandjirkanaal, the habour area eastern and southern border of Semarang. The 4^th company was attached to 2-13^th Infantry Regiment at de Gombel.
In March 1947 the 3-7^th Infantry Regiment took over the guarding of the airfield Kalibanteng. And during the 1^st Police Action 3^rd company seized Bedono and 4^th company the Toentangcentrale on 22^nd July 1947. On 29^th July 1^st and 2^nd company took over Kaliwoenggoe from 2-6^th Infantry Regiment and cleared the area. While 4^th and 5^th company took over Midjen and Tjankin from 1^st Regiment Stoottroepen.
After the 1^st Police Action the 3-7^th Infantry Regiment where placed around Oengaran and Ambarawa with positions in among others Banjoebiroe, Bedono and Soemoewono where it participated in different clearing operations. On 7^th September the TNI attacked Ambarawa and Soemoewong but was repulsed. On 11^th September the 3-7^th Infantry Regiment took over the area formerly secured by 4^th Guarde Regiment Princess Irene with positions in Mranggen, Demak and Goeboeg.
There was a lot of unrest in this area. First of all on the road Dempet-Goeboeg was very bloody because it often come under fire. On 30^th September 1947 the 5^th company was disbanded and distributed among the rest of the battalion. After a reorganisation in November 1947 the battalion’s area of responsibility was made smaller in a line north of Mranggen-Meteseh. With new energy the 3-7^th Infantry Regiment started to operate again like on 26^th November 1947 east of Dempet. And on 11^th January 1948 the 3-7^th Infantry Regiment area of responsibility was widened to the south. On 10^th March 1948 the 3-7^th Infantry Regiment was transferred to Semarang and posted as division reserve. As such it was put into action among others at Kedoengdjati and Soekamangli and with success at Poerwokerto, Boekatedja and Poerbalingga in the area of the V-Brigade. In November 1948 the 3-7^th Infantry Regiment was stationed in the Demak sector. To prepare against the infiltration of communist forces expected to come from eastern Java.
During the 2^nd Police Action the 3-7^th Infantry Regiment advanced on Rembang via Karanganjar and Koedoes, which was seized on 20^th December after heavy fighting. Then followed because of a lot of roadblocks a difficult advance to Tjepoe, which was reached in the evening on 23^rd December 1948. After this action the 3-7^th Infantry Regiment was stationed around Rembang, Blora en Tjepoe and the area was cleared after which it become very peacefully. On 25^th October 1949 the 3-7^th Infantry Regiment was relieved and moved to Koedoes. Via Semarang it moved to Batavia to prepare for its repatriation leaving onboard “Sibajak” on 29^th November 1949 and arriving in the Netherlands on 28^th December 1949.