I am puzzled by the apparent lack of information online about the troop strength of the victors in the Battle of the Pelennor Fields (aka the Battle of Minas Tirith). We are told in The Return of the King about which leaders came to Gondor's aid and how many men they brought with them, though the data is scattered throughout the book. But I have not been able to find a summary of the numbers anywhere.
My memory is hazy, but I remember reading that troops were sent from several different regions of southern Gondor, as well as the Rohirrim from Rohan, a garrison from Osgiliath, a handful of Rangers from the north, and of course the defenders of Minas Tirith itself.
Has anyone compiled an order of battle listing the numbers and origins of all the warriors mentioned in the books as fighting at Pelennor Fields? It would take some time to put together, but it would certainly be possible to make a fairly accurate estimate of the troop strength.
Note: An "order of battle" is simply a list of the units involved in a battle and the strength (i.e., number of soldiers) of each unit.