2 adjectives to describe railhead

Amount of ammunition per gun that will be delivered daily at respective railheads and the day of commencement.

The line was metre gauge and we had no stock to fit it, though later the Egyptian State Railways brought down some engines and trucks from the Luxor-Assouan section, but this welcome aid was not available till after the rains had begun and had made lorry traffic temporarily impossible between our standard gauge railhead and our fighting front.

2 adjectives to describe  railhead