Strategy has three levels corporate, business level and functional. Often the functional are associated with tactics. Here is an example of a corporate strategy for related diversification, the business level strategy is probably differentiation and the marketing strategy is product development, the R & D strategy is either radical or incremental - taking this article, what might be an example of an operations strategy that aligns with the corporate and aforementioned functional strategies? what are the associated tactics?

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The key here is to differentiate between strategy and tactics. The strategic plan is all about strategy, the functional plans start with a strategy and then move into tactics. In your plan you should focus on the corporate, business level and functional strategies. Leave the tactics for the annual functional plans (such as marketing or operations plans).