Could you put in a 246 with no abbreviations? Just curious 🙂
Good question! Yes, I think that would be fine.
The LC-PCC PS for RDA 220.127.116.11 specifically recommends recording a variant title substituting the corresponding spelled-out form of the abbreviation (if it is thought that some catalog users might reasonably expect that the form was spelled out in the source) if the abbreviation occurs as one of the first five words of the Title proper.
Though these particular abbreviations appear later in the title, you could justify the 246 with the main instruction, which says “record variant titles that are considered important for identification or access”:
246 3_ ǂa For honor, glory & union : ǂb the Mexican and Civil War letters of Brigadier General William Haines Lytle