New Penguin has released several new sets of decals for different WWII Russian vehicles and British WWI Mark IV tank.
There are also generic numerals in different sizes and fonts.

The new sets for 1/72 scale are:
72023 ISU-152 "Zveroboy" (Part 1)
72024 ISU-152 "Zveroboy" (Part 2)
72025 USSR WW2 Fuel Tanks Markings

And for 1/35:
35013 Ground Ironclads (Part 5) British WW1 Mk.IV Male (1)
35014 ISU-152 "Zveroboy" (Part 1)
35015 ISU-152 "Zveroboy" (Part 2)
35016 Arial Numeric Size 6 mm
35017 Arial Numeric Size 5 mm
35018 USSR WW2 Fuel Tanks Markings
35019 Impact Numeric Size 5 mm
35020 Impact Numeric Size 6 mm
35021 Ground Ironclads (Part 6) British WW1 Mk.IV Male (2)
35022 Spring of Victory (Part 5) Red Army lend-lease M4A2 (76)W Sherman (1)
35023 Red Army lend-lease M4A2 (76)W Technical Stencils (FTA plant)