Are you referring to the four New Guinea-New Britain (NGNB) Deadalus-Team maps, which are included in 4.13?
If so, the map you found above is different. It is a good map, but if memory serves me correctly it is approximately half-scale, whereas the NGNB maps are about 1:1, and cover a smaller area.
I have tried to unpack the NGNB maps from 4.13 without success, but there is some information about them in the first post of my Eastern Java map here as I use some objects from the NGNB maps
https://www.sas1946.com/main/index.php/topic,56172.msg622982.html#msg622982Scroll down to the installation instructions where there are some tips about how to install the NGNB maps into 4.12
Further info here;
https://www.sas1946.com/main/index.php/topic,57289.msg633034.html#msg633034For the other map you found above, I think you just need put the map folder into MAPMODS and enter its name and load details in the all.ini file
Any included textures go in the _Tex folder. If the map does not load then you probably have some missing objects. Find them with the static object checker,
https://www.sas1946.com/main/index.php/topic,762.msg8285.html#msg8285then find the objects and install them into the game.