This is an example of how you can create a minimal military symbol server using Node.js and milsymbol.
It supports output of military symbols as SVG and as PNG, you can use all options available for milsymbol to add modifiers for your symbols as well.
Installation:
npm install milsymbol-server
To start the server, navigate to this folder in a terminal and run:
node index.js
The symbols are named SIDC.FILETYPE, and you can access them using:
http://${hostname}:${port}/SFG-UCI---.png or
http://${hostname}:${port}/SFG-UCI---.svg
You can add any milsymbol options to the query string
SFG-UCI---.png?uniqueDesignation=BA01&square=true