In this there would be no realistic victor, and conventional forces would consequently play very much a secondary role.
Mcinnes, Colin & Sheffield G.D (eds.) Warfare in the Twentieth Century (1988)
The logic of this bleak conviction was that fighters would have only a secondary role to play.
Patrick Bishop FIGHTER BOYS: Saving Britain 1940 (2003)
There was a secondary role for adult chum salmon and watershed size, followed by other physical characteristics of streams.
Michelle C Nelson, John D Reynolds 2014, 'Time-delayed subsidies: interspecies population effects in salmon.', PLoS ONE
This demonstrates a secondary role of the fluctuational potential in the present case.
S.V. Luniov, P.F. Nazarchuk, A.I. Zimych, Yu.A. Udovytska, O.V. Burban 2019, 'Mechanisms of electron scattering in uniaxially deformed n-Ge⟨Sb, Au⟩ single crystals', Condensed Matter Physics