Hundreds of soldiers perished on Bryn Glas battlefield
A register of battlefields, and a new survey to identify 20th Century assets of historic importance, are being planned for Wales.
The Welsh Assembly Government will also look at promoting the study of Welsh history in communities and colleges.
They are among measurers being outlined by Heritage Minister Alun Ffred Jones.
Last month he was criticised for not doing enough to promote and preserve the site of a landmark battle in Powys fought more than 600 years ago.
Mr Jones is publishing a list of priorities for protecting sites of historic significance in Wales.
He said the priorities outlined in the statement would help ensure the people of Wales and visitors gain a better understanding of its history.
"We are all part of the story and the buildings and the archaeology around us help to give a sense of place," he said.
"As my statement shows, heritage can make an enormous difference to Wales today.
"Economic benefits through tourism are the obvious example - 90% of international visitors staying in Wales visit cultural sites. This level of activity cannot be underestimated in our economy."
He said he would ask the Welsh historic environment service Cadw to carry out a survey to identify 20th Century assets of historic importance.
He will consult on plans for a battlefields register and said he would up date guidance on heritage protection.
Woking with the education sector he said he would develop ways to promote the study of Welsh history at community level, in higher education and the school curriculum.
Mr Jones said he also wanted to encourage communities to run events at Cadw sites to celebrate the Welsh language, place names, local heritage and folklore.
Discussions would also be held on how to increase opportunities for volunteering and skills development.
In August Mr Jones was criticised by Brecon and Radnorshire AM Kirsty Williams for failing to promote and preserve Bryn Glas battlefield in Pilleth, near Knighton.
In June 1402, soldiers fighting for rebel Owain Glyndwr defeated English forces in a struggle for independence.
But it was sold as part of a 168-acre lot valued at £445,000 in 2006.
A group called Save Bryn Glas was formed in an attempt to buy the land for the Welsh nation, but the money needed could not be raised.
Ms Williams, the leader of Welsh Liberal Democrats, said at the time: "This site is an integral part of our history as a nation and the scant interest it has been given officially is in complete contrast to the Bannockburn 1415 site which has been accorded national status by Scotland."