To take part in a campaign.
Consistently ride in races for a racing season.
The period during which a blast furnace is continuously in operation.
A series of operations undertaken to achieve a set goal.
To participate in a foray.
To do or attempt something outside one's typical area of expertise.
A brief excursion or attempt, especially outside one's accustomed sphere.
A sudden or irregular incursion in border warfare; hence, any irregular incursion for war or spoils; a raid.