Oversewn is an old-fashioned term for whipped, as in whipped back, chain or stem stitch.
Palestrina used as an outline – Sweet Hearts embroidery pattern
Palestrina used to create a thick line – The Stitch & Thimble : 10
Link Powdering Stitch – Embroidery Stitches by Barbara Snook
You don’t see battlemented running stitch much these days. It’s worked along two lines and in two movements to create crenels and merlons, as you would see along the tops of castle or fort walls. If you ever find yourself needing to embroider a cog, this is the stitch you want to use. Herringbone stitch employs the same stitching motion as battlemented running stitch, but is worked from left to right instead of right to left.
Cogs worked in battlemented running stitch – The Stitch & Thimble : 12
Battlemented Running Stitch – Embroidery & Needlework by Gladys Windsor Fry