The French – Steinitz Attack arises after 1.e4 e6 2.e5. ECO code: C00.
White advances the e-pawn immediately, creating an Advance French structure without d4. This is premature—without d4 supporting the e5-pawn, Black can undermine it with ...d6, ...c5, and ...Nc6. White lacks the compensation that the standard Advance Variation (3.e5 after 2.d4 d5) provides.