"Get in formation" is a phrase that typically connotes organizing or aligning oneself with a group or goal. Some synonyms for this phrase could include arranging, positioning, or grouping. Additional options might include organizing, assembling, or coordinating. These words all convey the collective effort and sense of purpose implied by "get in formation." Depending on the context and desired tone, alternative phrasing like "set up," "structure," or "establish" could also be appropriate. Ultimately, the synonyms selected should reflect the specific goal or task at hand and the level of unity or collaboration required to achieve it.