A second excavation has been planned for early next year on the grounds of one of 19 houses at the historic Adam Park site, the last battle line before Singapore fell to the Japanese on Feb 15, 1942.
Organisers told The Straits Times they have "good evidence" that military equipment such as a British gas mask canister is located at the site.
The dig will supplement the first excavation effort in 2011 and surface digs that volunteers have been doing since the project was launched in 2010 to unearth stories and little-known facts about the World War II conflict.
"We are also hoping to dig up old weapons and fragments of military uniforms," said Mr Lim Chen Sian, from the Archaeology Unit at the Institute of Southeast Asian Studies.
Mr Lim estimates that the project, which depends very much on volunteer labour, will cost $3,000 to $5,000 for work such as re-turfing of the area after excavation and the purchase of supplies and equipment.
Four days of fierce fighting between British and Japanese troops took place at the 8ha site off Bukit Timah Road.
A 1,000-strong Cambridgeshire Regiment arrived in Singapore a month before the battle.
They fought the Japanese for control of a crucial pumping station that supplied water to downtown Singapore.
The site later became a camp for Australian and British prisoners of war.